Solved

Followup Q for shekerra

Posted on 2002-05-30
4
99 Views
Last Modified: 2010-04-13
Does a T-tail (such as on a Citation) have a noticeable effect on elevator authority in an accelerated stall?
0
Comment
Question by:cookre
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 16

Accepted Solution

by:
GUEEN earned 100 total points
ID: 7045697
The elevator (at low speeds) tends to ride in a burble of air behind the main wing creating a rough ride.  Early t-tails used to suffer from a condition known as "deep stall" where the main wing was stalled due to high angle of attack, and the t-tail was in the turbulent air behind the main wing.  Because the air was turbulent, the elevator
could not provide the control power necessary to kick the nose down for stall recovery.  Because the wing was stalled, the ailerons would not work, either, to allow a roll recovery.  The aircraft would descend,stable in the stall, right into the ground.  Needless to say, it would
spoil the day for everyone on board.

Later changes to the certification standards required systems to prevent the condition (stall warning, stick pushers and the like), sufficient engine power available in the stalled condition to push the aircraft out
of a stall (increased forward speed will reduce effective angle of attack), and that the inner wing stall before the outer wing, leaving the aileron portion unstalled later into the deep-stall condition.
0
 
LVL 22

Author Comment

by:cookre
ID: 7045855

In answer to your question in that other thread, yes, you now qualify.
0
 
LVL 16

Expert Comment

by:GUEEN
ID: 7046052
LOL thanx cookre :)
0
 
LVL 22

Author Comment

by:cookre
ID: 7050215
Addition commentary in the original thread:
http://www.experts-exchange.com/jsp/qManageQuestion.jsp?qid=20305509
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
A big percent of today’s marketing activity is performed through the online environment. The marketing strategies that have existed a decade ago no longer relate to what’s happening today. We’re currently facing a revolutionary era, called the digit…
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

732 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question